Thumb screw
01
엄지 나사, 나비 나사
a type of fastener designed with a large, knurled or textured head that can be easily tightened or loosened by hand without the need for additional tools
예시들
He tightened the thumb screw on the shelf to secure it in place.
그는 선반에 엄지 나사를 조여 제자리에 고정했습니다.
